My ECT and EOT are higher with CAT EC-1 !!!Why? - Ford Powerstroke Diesel Forum
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post #1 of 14 Old 04-23-2011, 05:41 PM Thread Starter
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My ECT and EOT are higher with CAT EC-1 !!!Why?

Within the last month my truck I has received new head gaskets, ARP studs, new oil cooler, egr delete and an AirDog II. All other mods in my signatute were completed within the last 3 months. When I got the truck back from the shop I noticed they put in a green mulit-vehicle coolant. With that coolant my ECT was 190 and my EOT was 4 to 7 degrees higher. Yesterday I made the switch to Zerex CAT EC-1 after the system was completely flushed of the green stuff. Today I took the truck out and my ECT was 190 - 192 and my EOT was 200 - 204 degrees. A 10 - 14 degree difference does not make sense just switching out coolants. It's almost like my NEW oil cooler is getting clogged. Can anybody provide a reasonable answer.

2007 F-350 King Ranch Dually 6.0, Edge Insight, Turbo back 4" MBRP Dual Exhaust, Where's Kitty, Garrett Powermax Stage 1 Turbo, ARP Head Studs, Sinister EGR Delete Kit, AirDog II 165, SCT w/Custom Tunes, Upgraded Fuel Pressure Spring, 6.4 Banjo's, Zoodad w/Metal Screen, CFM Intake, Jobe Air Intake,CAT ELC Coolant, DieselSight Coolant Filtration System, NUC Oil Bypass, & Amsoil Everywhere.
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post #2 of 14 Old 04-23-2011, 08:08 PM
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How did you flush? The process of flushing the system has been known to cause debris to come loose and clog coolers.

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post #3 of 14 Old 04-23-2011, 08:35 PM
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that, and there have been cases of faulty oil coolers.
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post #4 of 14 Old 04-23-2011, 09:15 PM
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So you hit it with a round of restore, VC9 (or restore +)? And many flushes before the ELC?

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post #5 of 14 Old 04-23-2011, 09:20 PM
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what XX% of coolant to XX% of water???

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post #6 of 14 Old 04-24-2011, 03:38 AM Thread Starter
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I understand the flush process however I've been busy at work so I took the truck to a local Ford dealer and they completely flushed the system twice. I supplied them with the CAT EC-1 and distilled water. They used 3 of the 4 gallons of ELC. This could be my problem? If my New oil cooler is getting clogged, where did this debri come from? Why did it not clogg with the green coolant? Will multiple flushes with the restore and VC 9 solve my problem and unclog the cooler? Frustrated

2007 F-350 King Ranch Dually 6.0, Edge Insight, Turbo back 4" MBRP Dual Exhaust, Where's Kitty, Garrett Powermax Stage 1 Turbo, ARP Head Studs, Sinister EGR Delete Kit, AirDog II 165, SCT w/Custom Tunes, Upgraded Fuel Pressure Spring, 6.4 Banjo's, Zoodad w/Metal Screen, CFM Intake, Jobe Air Intake,CAT ELC Coolant, DieselSight Coolant Filtration System, NUC Oil Bypass, & Amsoil Everywhere.
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post #7 of 14 Old 04-24-2011, 09:25 AM
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Quote:
Originally Posted by Gilstan View Post
I understand the flush process however I've been busy at work so I took the truck to a local Ford dealer and they completely flushed the system twice. I supplied them with the CAT EC-1 and distilled water. They used 3 of the 4 gallons of ELC. This could be my problem? If my New oil cooler is getting clogged, where did this debri come from? Why did it not clogg with the green coolant? Will multiple flushes with the restore and VC 9 solve my problem and unclog the cooler? Frustrated
I think ur suppose to flush before the cooler install..

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Bypass coolant filter, ELC
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post #8 of 14 Old 04-24-2011, 04:31 PM
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You should flush before a cooler install, but if you can't you run the risk of breaking some iron scale loose and clogging the cooler.

Matt | 2006 F250 XL FX4 6.0L 485RWHP and 968RWlbs-ft
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post #9 of 14 Old 04-24-2011, 04:38 PM
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My truck had both coolers replaced at 57,000 miles. My temps are between 6*-11* of difference when the coolant is below 195*. Once the coolant gets to or above, the difference is between 2*-6*.

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post #10 of 14 Old 04-24-2011, 06:04 PM
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That green coolant could have already been breaking down and clogging your oil cooler. And your dealer could have not gotten it all out which would likely cause big problems. Keep us updated.


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